nberg <lars.ellenberg@linbit.com> 1300201449 +0100
committer Philipp Reisner <philipp.reisner@linbit.com> 1351984582 +0100

drbd: add forgotten spin_unlock

somehow a "goto abort" was introduced with commit
  drbd: Extracted is_valid_transition() out of sanitize_state()
which left drbd_req_state still holding the spin lock.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>